OWC Envoy Pro Elektron review

Design & Durability

The Elektron is easier to carry than OWC’s larger finned Express models. Its aluminum enclosure is the main physical attraction: it keeps the drive compact without relying on a large protective sleeve. IP67 covers dust and temporary water exposure under the manufacturer’s conditions, specified as less than one meter for up to 30 minutes.

StorageReview found its original 1TB sample became noticeably warm during sustained work. That is an attributed observation from one sample, rather than a temperature measurement or evidence that every workload causes throttling. ¹

Performance

StorageReview’s 1TB sample reached about 905 MB/s reads and 950 MB/s writes in Blackmagic on a 2018 Mac mini, connected through a Thunderbolt 3 port using the drive’s USB interface. It is a useful indication of everyday transfer potential on that setup, not proof of whole-drive sustained speed. ¹

The 4TB version needs separate consideration. OWC says continuous writing falls to about 300 MB/s after roughly 3% of its capacity has been transferred. That can make a large, uninterrupted offload much slower than the headline figure suggests. The extra capacity is useful for holding a library, but someone repeatedly filling it should weigh that limitation carefully.

Connectivity

A faster Thunderbolt socket does not turn this into a Thunderbolt-speed SSD. Its practical benefit is a familiar USB connection rather than a demanding host requirement. USB-A use is supported with an appropriate adapter.

Check the supplied accessories for the actual package: older Elektron bundles included a tethered USB-A adapter, while the current manufacturer package lists a USB-C cable and treats the adapter separately. OWC also documents a firmware remedy for devices negotiating only USB 2 speeds on Snapdragon Windows systems; applying that update requires an Intel- or AMD-based computer.

Configurations & Setup

The older 240GB and 480GB versions are slightly heavier and thicker than the current models. Their original packages also included a USB-A adapter, which is sold separately for today’s versions.

Current drives are supplied for Mac use with APFS. Reformatting may be needed for another operating system. OWC supports use with the operating system’s own encryption, which is different from claiming a dedicated hardware-locking feature. The drive’s physical protection also does not protect access to an unencrypted file if the drive is lost.

Alternatives

The Samsung T7 Shield offers another protected 10 Gb/s design, with IP65 and documented hardware encryption. It is a useful comparison when password protection matters alongside portability.

The OWC Express 1M2 is larger, but its 40 Gb/s USB4 connection offers more transfer headroom on a suitable computer. Choose it for the workstation connection rather than expecting the Elektron to become faster on the same port.

Verdict

The Elektron is a good fit for portable working storage where a compact protected body and ordinary USB compatibility matter most. The 1TB and 2TB choices should be judged separately from the 4TB long-write limitation. For sustained bulk offloading, capacity alone is not enough to choose the largest model.